package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import com.heima.utils.common.MD5Utils;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;


import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

@Service
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService {

    @Autowired
    private ApUserMapper apUserMapper;
    /**
     *    用户登录
     * @param dto
     * @return
     */
    @Override
    public ResponseResult login(LoginDto dto) {

        //1.正常登录（密码+盐值）
        if (!StringUtils.isBlank(dto.getPhone()) && !StringUtils.isBlank(dto.getPassword())){

            //1.1 查询用户
            ApUser apUser = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, dto.getPhone()));
            if (apUser == null){
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户不存在");
            }

            //1.2 对比密码
            String salt = apUser.getSalt();
            String pswd = dto.getPassword();
            pswd = DigestUtils.md5DigestAsHex((pswd + salt).getBytes());
            if (!pswd.equals(apUser.getPassword())){
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }

            //1.3 返回数据 jwt
            Map<String,Object> map = new HashMap<>();
            map.put("token", AppJwtUtil.getToken(apUser.getId().longValue()));
            apUser.setSalt("");
            apUser.setPassword("");
            map.put("user",apUser);
            return ResponseResult.okResult(map);
        }else {
            //2.游客  同样返回token id=0
            Map<String,Object> map = new HashMap<>();
            map.put("token",AppJwtUtil.getToken(0L));
            return ResponseResult.okResult(map);
        }
    }


    /**
     * 用户注册
     * @param apUser
     * @return
     */
    @Override
    public ResponseResult register(ApUser apUser) {

        //判断apUser是否为空
        if (null == apUser){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST,"请填入信息");
        }

        //1.查询该用户是否已经注册
        ApUser user = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, apUser.getPhone()));
        if (null != user){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST,"您已注册，请登录");
        }

        //2.注册信息
        try {
            //2.1 对密码进行加密
            String pswd = apUser.getPassword();
            //获取盐值
            String salt = UUID.randomUUID().toString().replace("-","");
            //加密
            String password = MD5Utils.encodeWithSalt(pswd, salt);
            apUser.setPassword(password);
            apUser.setSalt(salt);
            apUser.setCreatedTime(new Date());
            //加入数据库
            int insert = apUserMapper.insert(apUser);
            System.out.println(insert);
            return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS.getCode(),"注册成功");
        } catch (Exception e) {
            e.printStackTrace();
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST,"请重新注册");
        }
    }
}
